Vehicle access / toll reader
Vehicle-mounted
What is it?
Vehicle access readers are outdoor-rated, high-speed readers designed to identify vehicles at gates, toll plazas, parking structures, and secure perimeters. They read windshield-mounted RFID tags or license-plate tags on vehicles moving at speeds up to 200 km/h. These are the readers behind electronic toll collection systems, gated community access, and corporate campus vehicle identification. The combination of long read range, high-speed capability, and outdoor durability sets them apart from general-purpose fixed readers.
How it works
A high-gain directional antenna is mounted on an overhead gantry or pole, angled down toward the approaching vehicle lane. The reader continuously scans for tags and captures the EPC when a tag enters the beam. UHF systems read standard EPC Gen2 windshield tags at 860–960 MHz. Microwave systems at 2.45 or 5.8 GHz use active or battery-assisted passive tags with longer range and faster data rates. The reader sends the tag ID to a back-end system that checks access permissions or deducts a toll, then triggers a GPIO output to open a barrier or log the transaction. Lane controllers handle edge cases like tailgating (two vehicles in one read window).
Industries
Use cases
- Electronic toll collection (E-ZPass, FASTag, etc.)
- Automated parking garage entry and exit
- Gated community vehicle identification
- Corporate campus and airport gate control
- Port and container yard vehicle tracking
- Military base vehicle access control
Pros
- Reads at highway speeds - no need to stop
- Outdoor-rated for extreme weather
- Long read range covers full lane width
- GPIO integration for barrier and gate control
- Proven reliability in 24/7 outdoor operation
Cons
- Expensive - high-powered outdoor hardware with premium enclosures
- Requires overhead gantry or pole mounting
- Lane engineering and civil works add to deployment cost
- Windshield-mounted tags can be obscured by metallised glass
- Microwave systems use proprietary protocols (not EPC Gen2)
Specifications
| Category | Vehicle-mounted |
|---|---|
| Frequency | UHF (860–960 MHz) or microwave (2.45 GHz / 5.8 GHz) |
| Read range | 5–15 m at highway speed |
| Environment | Outdoor only |
| IP rating | IP66–IP68 |
| Connectivity | Ethernet, Fibre (toll plazas), Serial, GPIO (barrier control) |
| Antenna configuration | High-gain directional antenna integrated or gantry-mounted |
| Price range | $5,000–$20,000 per lane |